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1. Dictionary

   Ma·ni·ac

   /ˈmānēˌak/

   

   noun

   • 1. a person exhibiting extreme symptoms of wild behavior, especially when violent and dangerous: "a homicidal maniac"
   • ▪ an obsessive enthusiast: informal "a gambling maniac" Similar enthusiastfanaddictdevoteeaficionadoinformal:freakfiendnutbuff
   • 2. a person suffering from mania. archaic Similar lunaticmadmanmadwomanmad personderanged personpsychopathpsychoticinformal:loonyfruitcakenutnutcasenutjobcuckoopsychoscrewballhead caseheadbangersickonutterradgecrazykookmeshuggenernutsowing nut

   Word Origin early 16th century (as an adjective): via late Latin from late Greek maniakos, from mania (see mania).

   Scrabble Points: 10

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2. www.merriam-webster.com › dictionary › maniacManiac Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › maniac

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   The meaning of MANIAC is someone who is or acts mentally unsound; especially : a person who behaves in a wildly foolish, reckless, or dangerous manner. How to use maniac in a sentence.

3. dictionary.cambridge.org › dictionary › englishMANIAC | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   MANIAC definition: 1. a person who has a very strong interest in a particular activity: 2. a person who behaves in an…. Learn more.

4. www.dictionary.com › browse › maniacMANIAC Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › maniac

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   noun. a raving or violently insane person; lunatic. any intemperate or overly zealous or enthusiastic person: a maniac when it comes to details.

5. www.vocabulary.com › dictionary › maniacManiac - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › maniac

   A maniac is a crazy person. Screaming like a maniac is never a good way to get your point across.

6. www.collinsdictionary.com › dictionary › englishMANIAC definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   1. countable noun. A maniac is a mad person who is violent and dangerous. The cabin looked as if a maniac had been let loose there. ...a drug-crazed maniac. 2. adjective [ADJECTIVE noun] If you describe someone's behaviour as maniac, you are emphasizing that it is extremely foolish and uncontrolled.

7. www.oxfordlearnersdictionaries.com › us › definitionmaniac noun - Definition, pictures, pronunciation and usage ...

   www.oxfordlearnersdictionaries.com › us › definition

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   a person who has an extremely strong desire or enthusiasm for something, to an extent that other people think is not normal synonym fanatic. (psychology) a person suffering from mania a homicidal maniac. maniac adjective [only before noun] a maniac driver/fan/killer See maniac in the Oxford Advanced Learner's Dictionary. Check pronunciation: maniac

8. www.yourdictionary.com › maniacManiac Definition & Meaning | YourDictionary

   www.yourdictionary.com › maniac

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   Maniac definition: A psychotic or otherwise mentally ill person who exhibits violent or bizarre behavior. Not used in psychiatric diagnosis.